Service manual

SERVICE MANUAL MASTER FILE
ENGLISH
Rev. A (1997/05/07)
2-1
.1 MAIN COMPONENTS
This printer is divided into several main components for easy removal and repair. The main
components are :
C229MAIN : Control board
C229PSB/PSE : Power supply board
C229PNL : Operation panel board
M-3J10 : Printer mechanism
Housing : Upper case, Lower case, Rear sheet guide, Knob, Printer cover
.1.1 C229MAIN Board
The C229MAIN board consists of CPU TMP96C141AF (IC3), gate array E05B50 (IC2), EEPROM
AT93C46 (IC4), 1/4M PSRAM (IC5), 2/4M PROM (IC7), driver elements, and so on.
CN3
P F M o to r D riv e r IC
C R M o to r D riv e IC G a te a rra y
E05B50
Print H ead D river
EEPRO M
PSRAM
PRO M
CPU
Figure 2-1 . C229MAIN Component
.1.2 C229PSB/PSE Board
The C229 PSB/PSE power supply board consists of Transformer, Switching FET, Regulator IC,
Diode bridge, Fuse, Photo-coupler, and so on.
Transform er
R e g u la to r IC
CN1
CN2
Switching FET
Fuse
D iode Bridge
Photo-coupler
Figure 2-2. C229PSB/PSE Component